Updated gitignore
Updated gitignore

chandps/CodingChallenges,chandps/CodingChallenges,chandps/Hackerrank,chandps/Topcoder,chandps/Hackerrank,chandps/Topcoder,chandps/Hackerrank,chandps/CodingChallenges,chandps/CodingChallenges,chandps/Hackerrank,chandps/CodingChallenges,chandps/Topcoder,chandps/Topcoder,chandps/Hackerrank